Specifications

24 Élan™SC310 Microcontroller Data Sheet
PRELIMINARY
Notes:
1. Reset State SYSCLK frequency is 4.6 MHz.
2. The drive strength for these pins is programmable. E is the default.
All inputs that have VCC clamp = 5 V are 5-V safe inputs regardless of their VCCIO.
Notes:
All inputs that have VCC clamp = 5 V are 5-V safe inputs regardless of their VCCIO.
TC [TMS] 49 O(I) — B 0 0.0 0.0 VSYS VCC5 30
ENDIRL 50 O — B 1 5.0 5.0 VSYS VCC5 30
ENDIRH 51 O — B 1 5.0 5.0 VSYS VCC5 30
DBUFOE
59 O — B 1 5.0 5.0 VSYS VCC5 30
IOR
54 O — C 1 5.0 5.0 VSYS VCC5 50
IOW
55 O — C 1 5.0 5.0 VSYS VCC5 50
MEMR
56 O — C 1 5.0 5.0 VSYS VCC5 50
MEMW
57 O — C 1 5.0 5.0 VSYS VCC5 50
RSTDRV 58 O — A 0 5.0 5.0 VSYS VCC5 30
IOCHRDY 192 STI PU — — 3.3 3.3 VCC1 VCC5 —
DACK1
146 O — B 1 3.3 5.0 VSYS2 VCC5 30
DRQ1 174 I — C — 0.0 0.0 VCC1 VCC5 100
DACK5
144 O — C 1 3.3 5.0 VSYS2 VCC5 100
DRQ5 175 I — C — 3.3 0.0 VCC1 VCC5 100
IOCHCHK
177 I — C — 3.3 3.3 VCC1 VCC5 100
IRQ4 173 I — C — 3.3 3.3 VCC1 VCC5 100
IRQ12 181 I — C — 3.3 3.3 VCC1 VCC5 100
IRQ15 182 I — B — 3.3 3.3 VCC1 VCC5 50
IOCS16
196 I — C — 3.3 3.3 VCC1 VCC5 70
MCS16
197 I — C — 3.3 3.3 VCC1 VCC5 70
IRQ14 198 I — C — 0.0 0.0 VCC1 VCC5 70
SBHE
143 O — C 0 0.0 0.0 VSYS2 VCC5 70
Table 3. System Interface (Continued)
Signal Name Pin No.
I/O
Type
Term
Drive
Type
Clock
Off
Reset State
(volts)
VCCIO VCC
Clamp
Spec.
Load
(pF)
Local
Bus
Max
ISA
Table 4. Keyboard Interface
Signal Name Pin No.
I/O
Type
Term
Drive
Type
Clock
Off
Reset State
(volts)
VCCIO
VCC
Clamp
Spec.
Load
(pF)
Local
Bus
Max
ISA
8042CS [XTDAT] 75 O(STI) — B 1(–) 5.0 5.0 VSYS VCC5 30
RC
78 I PU — — 5.0 5.0 VSYS VCC5 —
A20GATE 79 I PU — — 5.0 5.0 VSYS VCC5 —